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Excellent ME-Bio Is Required for Decomposing Algae in Cooling Water and Reducing Sludge Quantity.

Cooling water, Cold Water, Warm Water

The three pillars of cooling-water treatment are: (1) corrosion/rust prevention, (2) descaling, and (3) alga/slime/Legionella decomposition.According to organic/inorganic classification, (1) is inorganic, (2) is inorganic and organic, and (3) is organic.ME-Bio decomposes organic matter into inorganic matter.When arranged in workload order, they are (3) -> (2) -> (1).Under the unfavorable condition of being exposed to direct sunlight, ME-Bio must decompose/dissolve algae, Legionella, and other vigorous bad bacteria.Live cells are firm, and are vigorously multiplying.Alga/slime disturbances impair equipment operation, such as breeding of Legionella, solenoid valve opening/closing failure, blocking of apertures in a sprinkler bath atop a square cooling tower, pinholes in cooling tubes, and clogging in strainer and heat exchanger tubes.ME-Bio has corrosion/rust inhibiting and descaling capabilities, but it alone cannot afford to do the work. Therefore, ASAHI Inc. utilizes ME-Bio for the applications covered by the voltage generator (electron-wave water treatment unit).

After ME-Bio is loaded, algae begin to turn black in about a week, until they disappear in about a month when it looks like black sheets of paper.Legionella bacteria perish in about a week.As the cooling water tower continually absorbs many airborne spores and fungi, algae repeat generation, underdevelopment, and extinction.Consequently, algae in decomposition process may remain like pieces of black paper outside the filler, as shown in Photo 7.

To switch from chemical treatment to ME-Bio, install a voltage generator (electron-wave water treatment unit) and stop the supply of chemical agent, and about a week later, load ME-Bio in a quantity 1.5 times the design amount for six months.The excess amount of ME-Bio is exhausted by the chemical soaked in the scale in the pipe.

If an exhaust vent exists near the cooling tower and admits a Bio-damaging gas, algae turn black, but only half of them may be decomposed.Measures to deal with such a situation will be reviewed on a case-by-case basis.

<Dosage into General Cooling Water>

1 L of ME-Bio per 500 kW, for six months.12-hour operation/day.
1.5 L of ME-Bio per 500 kW, for six months.24-hour operation/day.
Note: ME-Bio needs to be loaded only once every six months. In fields favorable for alga generation or of Legionella risk, load ME-Bio every few months.Loading intervals should be determined by periodically counting the fungi.

<Dosage into Cooling Water in Large Tank or Raw Water in Boiler>

For 100 Hs/cm of electric conductivity: 1 L of ME-Bio per 100 m3
For 500 s/cm of electric conductivity: 5 L of ME-Bio per 100 m3

This system was adopted to deal with scale/slime problems in a building, which has a turbo refrigerator in each of the east and west machine rooms.
Photos 1 to 6 show comparisons of performance by biological and chemical means.

900 kW system: ME-Bio was loaded, and the electron-wave water treatment unit was installed.(Photos 1 and 2)
Photo 1		Photo 2
			Installation date: Apr. 7, 1994 Inspection date: Feb. 22, 1995 Results: Good.No slime deposit on the tube plate.
1100 kW system: Conventional chemical was used, and the electron-wave water treatment unit was installed.(Photos 3 and 4)
Photo 3		Photo 4
			Installation date: April 7, 1994 Inspection date: Feb. 21, 1995 Results: Bad.The tube plate does not become dry because of the thick slime deposit.Clearly shown on the lower right is a scrape made by a finger.
Because of the favorable result exhibited in the system loaded with ME-Bio, the chemical use in the 1100 kW system was stopped the same day, and after seven days ME-Bio was loaded.(Photos 5 and 6)
Photo 5		Photo 6
			Inspection date: Jun. 17, 1997 Results: Good.The tube plate is free of slime, so it soon begins to dry from the upper right and left.
Photo 7
		Algae is decomposed, disappearing in the form of black paper.

Inside of Cooling Tower, 650RT

Before		After ME-Bio 4 bags/lit.

Waste Water from Sewage Tank or Kitchen in Buildings

If presticides of strong acid/alkali are not mixed in large volume and the water tank is out of the sun, any environment is good for ME-Bio to work where the only requirement is oxygen.If the values of SS, BOD, and n-hexane are unfavorable, they usually are improved to the standard values a month after ME-Bio loading.Aeration is an important consideration for ME-Bio loading locations.With good aeration, ME-Bio dosage can be decreased.

1 L of ME-Bio per 10 m3 of sewage tank in a building, for three months
0.5 L of ME-Bio per 10 m3 of grease trap, for three months

Simple Test

Sample a few liters of water, and test it by adding a few grams of ME-Bio and applying goldfish aeration.Observe the changes in the first to the seventh day, and if improvement is demonstrated, inspect the water quality.

Test Results

Test Results of Legionella Bacteria (disease-causing bacteria) Before and After putting ME-Bio bags in the cooling tower

The table summarizes only the main points of 10 Japanese test results (https:www.asahi-lining.co.jp/bio/legio_data.html) on this website.

		Before			After
1.	CT-101. Legionella CFU/100ml Sampling date	750 08/16/2003			Not Detectable 01/10/2004
2.	Refrigerator-freezer system Legionella CFU/100ml Sampling date	76 09/05/2003			Not Detectable 09/19/2003
3.	No.20. Legionella CFU/100ml Sampling date	520 10/16/2007			10 CFU/100ml 11/13/2007
4.	CT-2. Legionella CFU/100ml Sampling date	690 08/18/2008			Not Detectable 09/29/2008
5.	CT-1-1. Legionella CFU/100ml Sampling date	1700 08/18/2008			20 CFU/100ml 09/29/2008

Decomposition of algae in the upper sprinkler tank/cooling tower (600RT), July 2008 to August 2008

https://www.asahi-lining.co.jp/bio/photo_alga.html

Test of ME-Bio for Acute Oral Toxicity in Mice